Climate and monthly weather forecastRoss, CA
Climate and monthly weather forecast
Weather in January
January, the same as December, in Ross, California, is a moderate winter month, with an average temperature varying between 56.1°F (13.4°C) and 45.5°F (7.5°C). A minor adjustment in Ross's average high-temperature is noted with the start of January, touching a still refreshing 56.1°F (13.4°C) from December's 55.4°F (13°C). Weather in January »Weather in February
February, the last month of the winter in Ross, is another mild month, with an average temperature ranging between max 57.9°F (14.4°C) and min 45.9°F (7.7°C). February observes an average high-temperature of a still refreshing 57.9°F (14.4°C), marking an insignificant difference from January's 56.1°F (13.4°C). Weather in February »Weather in March
March, the first month of the spring in Ross, is also a moderate month, with temperature in the range of an average low of 46.9°F (8.3°C) and an average high of 59.4°F (15.2°C). March records an average high-temperature of a still refreshing 59.4°F (15.2°C), indicating a minor variation from the preceding month. Weather in March »Weather in April
April is an enjoyable spring month in Ross, California, with an average temperature ranging between min 48.6°F (9.2°C) and max 62.8°F (17.1°C). The arrival of April is marked by an average high-temperature of an enjoyable 62.8°F (17.1°C), bearing a close resemblance to March. Weather in April »Weather in May
The last month of the spring, May, is another comfortable month in Ross, California, with an average temperature fluctuating between 64.9°F (18.3°C) and 50.4°F (10.2°C). May's commencement is accompanied by an average high-temperature of a still enjoyable 64.9°F (18.3°C), diverging marginally from April's 62.8°F (17.1°C). Weather in May »Weather in June
June, the first month of the summer in Ross, is an agreeable month, with an average temperature ranging between min 53.2°F (11.8°C) and max 69.1°F (20.6°C). The start of June marks an average high-temperature of an agreeable 69.1°F (20.6°C), hardly distinguishable from the conditions in May. Weather in June »Weather in July
July, the same as June, in Ross, California, is another pleasant summer month, with temperature in the range of an average low of 54.3°F (12.4°C) and an average high of 70.5°F (21.4°C). Ross starts July with an average high-temperature of a still pleasant 70.5°F (21.4°C), hinting at a minimal fluctuation from June. Weather in July »Weather in August
August, the last month of the summer in Ross, is another pleasant month, with an average temperature varying between 55.4°F (13°C) and 71.2°F (21.8°C). Transitioning from July to August, Ross observes an average high-temperature of a still agreeable 71.2°F (21.8°C), differing subtly from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Ross, is also an agreeable month, with an average temperature fluctuating between 56.1°F (13.4°C) and 72.3°F (22.4°C). September is Ross's warmest month, registering average high temperatures of 72.3°F (22.4°C) and lows of 56.1°F (13.4°C). Weather in September »Weather in October
October, the same as September, in Ross, California, is another pleasant autumn month, with an average temperature fluctuating between 54.3°F (12.4°C) and 68.9°F (20.5°C). In October, the average high-temperature registers at a still pleasant 68.9°F (20.5°C), nearly identical to September's 72.3°F (22.4°C). Weather in October »Weather in November
The last month of the autumn, November, is also an enjoyable month in Ross, California, with an average temperature fluctuating between 61.5°F (16.4°C) and 49.6°F (9.8°C). With the arrival of November, Ross experiences a modest decline in average high-temperatures, transitioning from an agreeable 68.9°F (20.5°C) in October to a comfortable 61.5°F (16.4°C). Weather in November »Weather in December
The first month of the winter, December, is still a mild month in Ross, California, with an average temperature fluctuating between 45.3°F (7.4°C) and 55.4°F (13°C). December, marked by an average high-temperature of 55.4°F (13°C) and a low-temperature of 45.3°F (7.4°C), is the coldest month. Weather in December »Updated: Feb 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Ross, California, during the entire year, the rain falls for 48 days and collects up to 3.94" (100mm) of precipitation.
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
February is the month with the most rainfall. Rain falls for 5.3 days and accumulates 0.87" (22mm) of precipitation.
The most humid month in Ross is March, with an average relative humidity of 77%.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Ross, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
The months with the highest UV index in Ross are April, June through September, with an average maximum UV index of 5.
The months with the least rainfall in Ross are June through September Rain falls for 1.2 days and accumulates 0.04" (1mm) of rain.
June has the longest days of the year in Ross, California, with an average of 14h and 48min of daylight.
July has the most sunshine of the year in Ross, California, with an average of 11.2h of sunshine.
September, recognised by an average high temperature of 72.3°F (22.4°C) and a low of 56.1°F (13.4°C), is Ross's warmest month.
October is the least humid month, with an average relative humidity of 68%.
In Ross, the lowest temperatures are generally noted in December, averaging a high of 55.4°F (13°C) and a low of 45.3°F (7.4°C).
The month with the shortest days in Ross is December, with an average of 9h and 36min of daylight.
December has the least sunshine of the year in Ross, California, with an average of 5.5h of sunshine.
Average temperature
Ross, CA
The warmest month (with the highest average high temperature) is September (72.3°F).
The month with the lowest average high temperature is December (55.4°F).
The month with the highest average low temperature is September (56.1°F).
The coldest month (with the lowest average low temperature) is December (45.3°F).
Average pressure
Ross, CA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed
Ross, CA
- Average wind speed in January:
6mph - Average wind speed in February:
6.8mph - Average wind speed in March:
7.3mph - Average wind speed in April:
7.6mph - Average wind speed in May:
7.8mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.4mph - Average wind speed in September:
5.9mph - Average wind speed in October:
5.5mph - Average wind speed in November:
5.5mph - Average wind speed in December:
6.2mph
The windiest month (with the highest average wind speed) is May (7.8mph).
The calmest months (with the lowest average wind speed) are October and November (5.5mph).
Average humidity
Ross, CA
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is October (68%).
Average rainfall
Ross, CA
- Average rainfall in January:
0.59" - Average rainfall in February:
0.87" - Average rainfall in March:
0.59" - Average rainfall in April:
0.2" - Average rainfall in May:
0.28" - Average rainfall in June:
0.04"
- Average rainfall in July:
0.04" - Average rainfall in August:
0.04" - Average rainfall in September:
0.04" - Average rainfall in October:
0.12" - Average rainfall in November:
0.47" - Average rainfall in December:
0.67"
The wettest month (with the highest rainfall) is February (0.87").
The driest months (with the least rainfall) are June, July, August and September (0.04").
Average rainfall days
Ross, CA
- Average rainfall days in January:
5.9 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
5.5 days - Average rainfall days in May:
3.3 days - Average rainfall days in June:
1.2 days
- Average rainfall days in July:
1.4 days - Average rainfall days in August:
1.2 days - Average rainfall days in September:
1.7 days - Average rainfall days in October:
2.6 days - Average rainfall days in November:
3.9 days - Average rainfall days in December:
7.2 days
The month with the highest number of rainy days is March (8.8 days).
The months with the least rainy days are June and August (1.2 days).
Average daylight / Average sunshine
Ross, CA
- Average daylight in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
5h and 42min - Average sunshine in February:
6h and 6min - Average sunshine in March:
7h and 30min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 6min
- Average sunshine in July:
11h and 12min - Average sunshine in August:
10h and 54min - Average sunshine in September:
10h and 24min - Average sunshine in October:
6h and 48min - Average sunshine in November:
6h and 18min - Average sunshine in December:
5h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days
Ross, CA
- Average sunshine days in January:
24.2 days - Average sunshine days in February:
21.4 days - Average sunshine days in March:
20.7 days - Average sunshine days in April:
23.3 days - Average sunshine days in May:
24.7 days - Average sunshine days in June:
26.4 days
- Average sunshine days in July:
26.3 days - Average sunshine days in August:
24.8 days - Average sunshine days in September:
26 days - Average sunshine days in October:
26.2 days - Average sunshine days in November:
24 days - Average sunshine days in December:
22.1 days
The month with the most sunshine days is June (26.4 days).
The month with the least sunshine days is March (20.7 days).
Average UV index
Ross, CA
The months with the highest UV index are April, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover
Ross, CA
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility
Ross, CA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
